mcpdiff MCP server Validates Model Context Protocol messages against the official schemas for every spec version. Endpoint: https://mcp.mcpdiff.dev/mcp (Streamable HTTP, stateless, no sign-in) Tools: validate_message, validate_type, find_type, validate_with_schema, lint_tools, check_hallucinations, generate_example, infer_schema, list_versions, diff_versions, get_type, list_methods, lookup_term, about, open_live_view, push_to_live_view Live view: https://mcp.mcpdiff.dev/live/ (server-sent events for the page at https://mcpdiff.dev/#/live; pushes go only to open tabs and are never stored) Website: https://mcpdiff.dev Add it to a client, for example: claude mcp add --transport http mcpdiff https://mcp.mcpdiff.dev/mcp